Publications by authors named "Favrot C"

Article Synopsis
  • Hymenoptera is an insect order that includes species like honeybees and wasps, and their venom can cause severe allergic reactions in dogs, similar to humans.
  • A study examined the medical histories of 178 dogs stung by these insects to understand risk factors for severe systemic reactions (SSRs), finding that younger dogs, smaller breeds, and those stung in sensitive areas faced higher risks.
  • The research highlighted that many dogs with SSRs experienced similar or worse symptoms upon subsequent stings, indicating a strong case for using venom immunotherapy (VIT) for affected dogs.
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Intralymphatic immunotherapy (ILIT) has been used successfully in both human and veterinary medicine as a safe and effective treatment for allergic diseases. Initially, ILIT was administered by ultrasound guidance, but palpation-based injections have become more popular among veterinary dermatologists. Data from human medicine, however, show that precise injection into the lymph node is mandatory, and injection quality clearly correlates with clinical response.

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Background: Allergen-carrying virus-like particles are effective and safe means of allergen immunotherapy (AIT) in rodent models.

Objective: To study the development of allergen-blocking immunoglobulin (Ig)G in dogs injected with Der f 2-carrying enveloped plant-based bioparticles (eBPs).

Materials And Methods: Laboratory beagle dogs were injected intradermally (ID) or subcutaneously (SC) with Der f 2-eBP three times at 2-week intervals.

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Background: Immunoglobulin (Ig)E cross-reactivity has been shown between Dermatophagoides farinae (Df; house dust mite) and the nematode Toxocara canis (Tc), yet its allergen basis is unknown.

Objectives: To identify the Df allergens IgE-cross-reactive with those of Tc.

Animals: Archived sera from 73 dogs with suspected allergy sensitised to Df.

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Canine atopic dermatitis (CAD) is an allergic, inflammatory, and pruritic skin disease associated with the production of IgE antibodies against environmental allergens and mainly house dust mite allergens. This complex dermatological pathology involves Interleukin 31 (IL-31) as a central itch mediator. One of the most effective CAD treatments is a caninized monoclonal antibody (mAb) called Lokivetmab.

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Article Synopsis
  • Allermmune HDM is an immunotherapy vaccine aimed at treating house dust mite allergies in dogs, but its effects on cats have not been studied until now.
  • In a study involving 11 cats with atopic skin syndrome, the vaccine was administered weekly for six weeks followed by monthly doses, showing no adverse effects and significant improvement in skin lesions and itchiness after six weeks.
  • The study suggests Allermmune HDM is safe for cats and may effectively reduce allergy symptoms, indicating that the levels of allergen-specific IgE could help measure its effectiveness; further research is recommended.
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Hymenoptera allergens are the main triggers for anaphylaxis in susceptible dogs and humans. Hymenoptera venom specific immunotherapy (VIT), the only disease-modifying treatment, has the potential to prevent future life-threatening reactions in human patients. Prospective clinical data on VIT efficacy in dogs are currently lacking.

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Article Synopsis
  • - This study investigates the gut microbiome of beagle dogs with atopic dermatitis (AD) compared to healthy dogs by analyzing their stool samples before and after 30 days of treatment with oclacitinib.
  • - Results show that dogs with AD had significantly lower gut microbiota diversity and different compositions than healthy dogs, with specific bacterial families more abundant in the healthy group.
  • - The treatment with oclacitinib did not result in changes to the gut microbiota, indicating a potential link between gut microbiota alterations and canine AD, highlighting the need for further research on this topic.
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Phaeohyphomycosis was diagnosed in a 6-year-old, male castrated Dachshund on immunosuppressive treatment. The fungus was identified by culture and PCR as Phialophora americana. This is the first reported case of infection with this pathogen in a dog.

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Background: Human studies suggest that the cytokines, interleukin 10 (IL-10) and transforming growth factor-beta 1 (TGF-ß1) may play an important role in allergen-specific immunotherapy (ASIT). However, there is little known about the function of these cytokines in atopic dogs. This study compared the plasma levels of IL-10 and TGF-ß1 in atopic and control dogs and investigated their changes during different ASIT approaches.

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Background: Canine atopic dermatitis (cAD) is a common chronic relapsing pruritic skin disease for which management commonly relies on life-long use of immunomodulatory drugs. A number of the medications used are associated with adverse effects and the potential for complications during long-term use.

Hypothesis: The goal of the study was to determine if a complete and balanced diet formulated for therapeutic benefit could contribute towards management of cAD.

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Article Synopsis
  • - A study was conducted to assess how many dogs with atopic dermatitis are sensitised to specific allergens from house dust mites, focusing on Dermatophagoides farinae, Der f 2, and Zen 1 across various countries.
  • - Serum samples from 32 lab dogs in Japan and 837 atopic dogs from 11 different countries worldwide were tested for IgE sensitisation levels using ELISA.
  • - The results showed a high range of IgE positivity for Df (74%-100% across countries), significant rates for Der f 2 (12%-88%), and for Zen 1 (70%-100%), indicating these allergens are prevalent and correlated, especially between Df and Zen 1. *
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There is growing evidence that equine papillomavirus type 2 (EcPV2) infection is etiologically associated with the development of genital squamous cell carcinoma (SCC) and precursor lesions in equids. However, the precise mechanisms underlying neoplastic progression remain unknown. To allow the study of EcPV2-induced carcinogenesis, we aimed to establish a primary equine cell culture model of EcPV2 infection.

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Background: The use of concurrent medications is necessary in trials of treatment of canine atopic dermatitis. Our aim was to use the best available evidence to construct and then to validate a medication score (MS) formula that will estimate the impact of concurrent medications on trial outcomes.

Methods: Trials of 15 interventions were scrutinized to find those that were consistent in terms of specific medication, administration route and dosage regimen.

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Background: The gold standard to diagnose food allergy in dogs is an eight week elimination diet trial (EDT) followed by a re-challenge. A recent study demonstrated that a shorter EDT is possible if prednisolone is administered initially.

Hypothesis/objectives: The goal was to evaluate the sensitivity and specificity of the EDT based on the number of relapses after prednisolone discontinuation.

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Background: Regulatory T (Treg) cells are involved in homeostasis of immune regulation and suppression of inflammation and T-cell polarisation. Current knowledge regarding the role of Treg cells in the initiation of allergic disease is limited for both people and dogs.

Objectives: To explore the role of circulating Treg cells and their possible influencing factors, on the development of atopic dermatitis (AD).

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In this pilot study, we wished to determine if C-reactive protein (CRP) levels could be a useful severity or treatment biomarker for canine atopic dermatitis (AD). Nine atopic dogs received allergen immunotherapy for 1 year. Blood was collected before and at four re-evaluation visits.

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A 1.5-year-old male castrated dog was presented in anaphylactic shock after suffering an apparent bee sting. Immunotherapy with bee venom was initiated based upon history, skin testing and serological testing for allergen-specific immunoglobulin (Ig)E.

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Transcription infidelity (TI) is a mechanism that increases RNA and protein diversity. We found that single-base omissions (i.e.

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Background: Allergen-specific immunotherapy (ASIT) is the only causative treatment of canine atopic dermatitis (cAD). Different routes for administration of ASIT have been used; however, comparative studies are lacking.

Hypothesis/objectives: The present study compared the efficacy and safety of subcutaneous (SCIT), intralymphatic (ILIT) and sublingual (SLIT) immunotherapy.

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Background: There is accumulating evidence in studies of allergic diseases in humans and dogs that environmental experiences during the first months of life can influence the development of allergic disease. No prospective study has evaluated this in veterinary medicine.

Hypothesis/objectives: To assess early-life risk factors for canine atopic dermatitis (cAD) and estimate its heritability.

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Canine atopic dermatitis (CAD) is a prevalent inflammatory skin disease of dogs worldwide. Certain breeds such as the West Highland White Terriers (WHWT) are predisposed to suffer from CAD. Microbial dysbiosis is known to play a significant role in the pathogenesis of the disease, which is similar to its human counterpart, atopic dermatitis (AD).

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Background: Canine atopic dermatitis (cAD) is a common allergic skin disease that is known to affect individuals early in life; the natural history of its initial development has not been documented. Some breeds such as West Highland white terriers (WHWTs) are highly predisposed to cAD.

Objectives: To follow 100 WHWT puppies during their first three years and to record the onset of clinical signs of cAD.

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Background: There is growing evidence that equine papillomavirus type 2 (EcPV2) infection is causally associated with the development of equine genital squamous cell carcinomas (SCCs). Early stages of disease present clinically as plaques or wart-like lesions which can gradually progress to tumoural lesions. Histologically these lesions are inconsistently described as benign hyperplasia, papilloma, penile intraepithelial neoplasia (PIN), carcinoma in situ (CIS) or SCC.

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